Quantum solitons of the nonlinear sigma-model with broken chiral symmetry
A. P. Kostyuk, A. P. Kobushkin, N. M. Chepilko, T. Okazaki
Abstract
It is proved that the quantum-mechanical consideration of global breathing of a hedgehog-like field configuration leads to the dynamically stable soliton solutions in the nonlinear sigma-model without the Skyrme term. Such solutions exist only when chiral symmetry of the model is broken.
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